I work in tech providing key products and services to all sectors. American companies manufacturing abroad are already telling us to expect a 10-15% overall price increase in January. I do not understand how this is supposed to help anybody.
I found this article about Tariffs online from PBS which explains these Tariffs on more detail.
https://www.pbs.org/newshour/amp/economy/trump-favors-huge-new-tariffs-how-do-they-work